Combination gate and by-pass valve.



A. PRICE.

COMBINATION GATE AND BY-PASS VALVE.

APPLIOATION FILED JULY a, 1006.

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UNITE STATES PATENT onnion.

ALFRED PRICE, 0]? LOS ANGELES, CALIFORNIA, ASSIGNOR 0F ONE-HALF TO FRANK RADEMACHER, 0]? LOS ANGELES, CALIFORNIA.

COMBINATION GATE AND BY-PASS VALVE.

Specification of Letters Patent.

Patented Mar. 12, 1912.

To all whom it may concern:

Be it known that I, ALFRED PRICE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Combination Gate and By-Pass Valve, of which the following is a specification.

It is of the objects of this invention to provide for high pressure water and steam pipes a gate or valve which can be readily opened and closed; which will wedge tightly in place at the final closing movement of the gate-spindle, and which will readily become freed from any clogging material.

A further object is to provide a simple and compact gate by which the foregoing objects are accomplished.

The accompanying drawings illustrate the invention Figure 1 is a sectional elevation on the axial line of a straight way gate embodying my invention. The valve-spindle and other parts are shown in the position occupied at the final closing movement of the by-pass plates or disks just after the valve plates or disks have come into position to be finally seated by the wcdging movement of the valve-plate operating means. The position of the parts shown is much the same as that which they assume at the initial opening movement after the by-pass valve plates have been unseated. The openings between the valve disks or plates and their seats are exaggerated. Fig. 2 shows a like section of the valve-shell with an elevation of the edge of the valve in place; the by-pass disks are seated and the valve and bypass disks are wedged home. Fig. 3 is a fragmental plan section on line 00 Fig. 1. Fig. 4; is an elevation of the plate-operating means, a bypass valve-disk and a valve-disk in assembled position. Fig. 5 is a view of the face of the by-pass valve-disk which engages the disk-operating means. Fig. 6 is a view of the inner face of one of the valve-disks.

1 designates the valve body provided with a gate-Way 2.

3 is a valve-gate comprising two perforated valve-disks or plates 4 mounted in said way 2 and provided on their adjacent faces with by-pass valve-seats 5.

6 designates two perforated bypass valve plates seated in said by-pass valve-seats 5 for controlling the perforations of said valve-disks.

8 designates the valve-plate operating means, the same being in the form of a double wedge-shaped head for moving the by-pass plates 6 to open and close the bypass slots or perforations of the gate. 9 designates the by-pass perforations in the valve-disks, and 10 the by-pass perforations in the by-pass disks.

11 designates a spring mounted in ways 12 in the valve-disks 1 to engage the head 8 on the downward movement of said head, and to hold said head from wcdging the bypass valve-plates apart until said head is forced down at the final closing movement of the valve. The spring 11 may be a resilient plate mounted in the ways 12 which allow the valve disks or plates to have a play toward and from each other for seating and unseating the valve. 13 is the spindle which operates the head 8, and 14 is a wheel for operating said spindle.

The head 8 is provided with shoulders 15, and the by-pass valve-plates (3 are provided with shoulders 16 to be engaged by the shoulders 15, and the wcdging faces 17 to be engaged by the wedge-shaped head 8.

The valve-disks 4 are provided with portions 18 which engage each other to prevent the disks from binding on the nut 19 or legs 20 of the head 8.

It is to be understood that any means may be employed for forcing the head up or down. In the drawings, the usual screwthreaded spindle 13 is shown.

In practical operation, assuming the valve to be closed, as shown in Fig. 2,- the attendant may open the same by rotating the wheel 14: raising spindle 13, thereby moving the head 8 from its wcdging position shown in Fig. 2 to its lifting position shown in Fig. 1. Upon further upward movement of the operating head 8 the bypass valve-plates will be moved to admit water through the ports 9, 10, thereby equalizing the pressure on the valve sufiicient-ly to allow the same to be moved by application to the spindle of a moderate degree of force. At the same time, the valve-plates are relieved from the wcdging stress and the valve-plates become unseated from the main valve-seats 21 in the shell or body 1 of the valve. A further upward movement of the head 8 acts through the by-pass valveplates 6 to lift the valve-disks or plates 4 to open the way 22 for the passage of steam, water or other fluid.

To close the valve, the operation is reversed and the head 8 will lower until the valve-plates 4 are seated in the seat 23 in the valve shell or body 1, whereupon the valve-plates or disks come to rest, and upon the further downward movement of the valve-operating head 8, the by-pass valveplates 6 will be forced downward by engagement of said head, and the downward stress of the head will act upon the spring 11 until the head is lowered far enough to force cause, and in case of any such obstruction, as by partial seating of the valve-plates, the

engagement of the head 8 on the spring 11 will transmit force from the stem 13 to the plates 4 to move them downward.

The spring 11 is preferably bowed upward when free, and when the head engages the same there may be considerable downward movement of the head before the wedging movement begins.

On the upward movement of the head 8 the shoulders 15 operate through shoulders 16 of the by-pass valve-plates 6, which plates are lifted thereby, to lift the shoulders 24 of the main valve-plates 4; and in this manner the main plates 4 are lifted after the by-pass has been opened and the pressure relieved, so that said main valve-plates may be lifted with comparatively small friction relatively to the valve-seats of the shell 1.

On the closing movement, the gravity of the valve-plates'or pressure of the head 8 on spring 11 will carry the same onward until said plates are seated in the seat 23, whereupon a further closing movement will cause the wedges to force the by-pass valve-plates tightly against the main valve-plates.

The perforations in the main and by-pass valve-plates 4 and 6 are preferably in the form of elongated slots, as shown, whereby a slight movement of the by-pass valveplates opens a considerable area for the flow of the fluid for equalizing the pressure.

The spring 11 may be held in place by a pin 25 at one end, while the other plays freely in the way 12.

In case the valve is mounted with the stem 13 hanging. down, the head will lift the valve-disks and plates through direct contact therewith and through the spring 11. This will readily be understood by simply inverting the drawings. It is advisable to employ the spring as shown inorder to insure the closing movement. It is thus seen that the Wedge means is in operative relation to the valve-plates being operable through the medium of its shoulders and the by-pass plates to lift the valve-plates, and is also operable through the medium of the spring 11 to hold the valve-plates down during the period betweenv the release of the wedge and the uplifting of the valve-plates.

What I claim is .1. A valve body provided with a gateway, a valve-gate comprising two separate valve-disks mounted in said way and provided with ports and having bypass valveseats on their adjacent faces; two perforated by-pass valve-plates in said ,by-pass valveseats for controlling the ports in said valve disks, and means for moving the valve-disks apart to tighten them in the way, and means to move the by-pass valve-plates to open and close the ports and the gate.

2. A valve-body provided with a gateway, a valve-gate comprising two valvedisks mounted in said way and provided with ports and having by-pass valve-seats on their adjacent faces; two perforated bypass valve-plates in said by-pass valve-seats for controlling the ports in said valve-disks, and means for moving the by-pass valveplates to open and close the ports and the gate, said means being adapted to spread the valve-plateS apart.

3. A valve-body provided with a gateway, a valve-gate comprising two valvedisks mounted in said way and provided with ports and having by-pass valve-seats on their adjacent faces; two perforated bypass valve-plates in said. by-pass valve-seats for controlling the ports in said valve-disks, means for moving the by-pass valve-plates to open and close the ports and the gate, said means being adapted to spread the valveplates apart, and means for holding the spreading means inoperative during the movement of the valve-gate transversely of the valve-body.

4. A valve-body provided with a gateway, a valve-gate comprising two valvedisks mounted in said way and provided with ports and having by-pass valve seats on their adjacent faces; two perforated bypass valve-plates in, said by-pass valve-seats for controlling the ports in said valve-disks; means for moving the by-pass valve-plates to open and close the ports and the gate, said means being adapted to spread the valve-plates apart, and resilient means for holding the spreading means inoperative during the movement of the valvegate transversely of the valve-body.

5. A valve-gate comprising valve-plates having shoulders and also having ports and a valve-seat formed thereon; spring means carried by said plates; 2. by-pass valve operating between said plates and having ports arranged to register with said plate ports; and Wedge means in operative relation to the valve-plates to uplift the same and arranged to engage said spring means for holding said plates down during the period between the release of the wedge and the uplifting of the valve plates.

6. A valve-gate comprising valve-plates having elongated slots and seats and shoulders formed thereon; slotted valve-members arranged to register with said slots operably interposed between said plates; Wedge means for spreading said plates and valve members respectively apart, there being shoulders on said wedge means in operative relation to the shoulders of the valve-plates to lift the same; and a spring carried by said valve-plates and o erable by the wedge means to hold said va ve-plates down during the period between the release of the wedge and the uplifting of the valve-plates.

In testimony whereof, I have hereunto set my hand at Los Angeles, California this 28th day of June 1906.

ALFRED PRICE.

In presence of- JAMES R. TOWNSEND, JULIA TOWNSEND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C. 

